/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | foam-extend: Open Source CFD
   \\    /   O peration     | Version:     4.1
    \\  /    A nd           | Web:         http://www.foam-extend.org
     \\/     M anipulation  | For copyright notice see file Copyright
-------------------------------------------------------------------------------
License
	This file is part of foam-extend.

	foam-extend is free software: you can redistribute it and/or modify it
	under the terms of the GNU General Public License as published by the
	Free Software Foundation, either version 3 of the License, or (at your
	option) any later version.

	foam-extend is distributed in the hope that it will be useful, but
	WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
	General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.

Class
	Foam::STLtriangle

Description
	A triangle representation for STL files.

SourceFiles
	STLtriangleI.H

\*---------------------------------------------------------------------------*/

#ifndef STLtriangle_H
#define STLtriangle_H

#include "STLpoint.H"
#include "Istream.H"
#include "Ostream.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

// Forward declaration of friend functions and operators
class STLtriangle;
Ostream& operator<<(Ostream&, const STLtriangle&);



class STLtriangle
{
	// Private data

		//- Attribute is 16-bit
		typedef unsigned short STLattrib;

		//- The face normal, many programs write zore or other junk
		STLpoint normal_;

		//- The three points defining the triangle
		STLpoint a_, b_, c_;

		//- The attribute information could for colour or solid id, etc
		STLattrib attrib_;


public:

	// Constructors

		//- Construct null
		inline STLtriangle();

		//- Construct from components
		inline STLtriangle
		(
			const STLpoint& normal,
			const STLpoint& a,
			const STLpoint& b,
			const STLpoint& c,
			unsigned short attrib
		);

		//- Construct from istream (read binary)
		inline STLtriangle(istream&);


	// Member Functions

		// Access

			inline const STLpoint& normal() const;
			inline const STLpoint& a() const;
			inline const STLpoint& b() const;
			inline const STLpoint& c() const;
			inline unsigned short attrib() const;


		// Read

			//- Read from istream (binary)
			inline void read(istream&);


		// Write

			//- Write to ostream (binary)
			inline void write(ostream&);


	// Ostream operator

		inline friend Ostream& operator<<(Ostream&, const STLtriangle&);
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#include "STLtriangleI.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //
